Connect USB Keyboard.
1. Download GAPPS from Broswer
http://goo.im/gapps/
ICS
gapps-ics-20120429-signed.zip
JB
gapps-jb-20121011-signed.zip
2. Run File Explorer
3. Unzip by File Explorer app.
4. Run Terminal
5. get Root
#su
6. remount /system patition to rw
#mount -o rw,remount /system
root@android:/sdcard/Download # mount
rootfs / rootfs ro,relatime 0 0
tmpfs /dev tmpfs rw,nosuid,relatime,mode=755 0 0
devpts /dev/pts devpts rw,relatime,mode=600 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,relatime 0 0
none /acct cgroup rw,relatime,cpuacct 0 0
tmpfs /mnt/asec tmpfs rw,relatime,mode=755,gid=1000 0 0
tmpfs /mnt/obb tmpfs rw,relatime,mode=755,gid=1000 0 0
none /dev/cpuctl cgroup rw,relatime,cpu 0 0
/dev/block/mmcblk0p2 /system ext4 rw,relatime,barrier=1,data=ordered 0 0
/dev/block/mmcblk0p3 /data ext4 rw,nosuid,nodev,noatime,barrier=1,nodelalloc,da0
/dev/block/mmcblk0p4 /cache ext4 rw,nosuid,nodev,noatime,barrier=1,nomblk_io_su0
none /proc/bus/usb usbfs rw,relatime,devmode=666 0 0
/dev/block/vold/179:1 /mnt/sdcard vfat rw,dirsync,nosuid,nodev,noexec,relatime,0
/dev/block/vold/179:1 /mnt/secure/asec vfat rw,dirsync,nosuid,nodev,noexec,rela0
tmpfs /mnt/sdcard/.android_secure tmpfs ro,relatime,size=0k,mode=000 0 0
root@android:/sdcard/Download #
7. cp gapps files
/system/bin/busybox cp -rv /sdcard/Download/gapp-jb-20121011-signed/system/* /system/
8. change permissions
#cd /system/app
#chmod 644 *
#sync
#reboot
9. finish
